<input type=file name=file1 style="display:none" onpropertychange="document.form1.file2.value=this.value;">
<input name=file2>
<br>
<input type=button value="浏览" onclick="document.form1.file1.click();">
</form>
<input name=file2>
<br>
<input type=button value="浏览" onclick="document.form1.file1.click();">
</form>